20213245

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1259}}^1$

素因数の和:1309

約数の個数: 24

約数和(自身を含む): 27669600

約数和(自身を除く): 7456355

約数列:

[1, 5, 13, 19, 65, 95, 169, 247, 845, 1235, 1259, 3211, 6295, 16055, 16367, 23921, 81835, 119605, 212771, 310973, 1063855, 1554865, 4042649, 20213245]

約数ペア:

[(1, 20213245), (5, 4042649), (13, 1554865), (19, 1063855), (65, 310973), (95, 212771), (169, 119605), (247, 81835), (845, 23921), (1235, 16367), (1259, 16055), (3211, 6295)]